Question 1 :
An isotope of iodine is used in the treatment of goitre. TRUE OR FALSE?
Question 2 :
An isotope of _______ is used in the treatment of goitre?
Question 3 :
Dalton’s atomic theory suggested that the atom was divisible and destructible. TRUE or FALSE ?
Question 4 :
An atom is divisible and consists of charged particles. TRUE OR FALSE?
Question 5 :
On the basis of Rutherford’s model of an atom, which subatomic particle is present in the nucleus of an atom?
Question 8 :
If mass number is 2 and number of proton is 1, then find name of the atomic species.
Question 9 :
If K and L shells of an atom are full, then what would be the total number of electrons in the atom?
Question 10 :
If mass number is 24 and number of protons is 12, then find atomic number.
Question 12 :
If mass number is 1, number of neutrons is 0, number of protons is 1 and number of electrons is 1 then find atomic number.
Question 13 :
Chlorine occurs in nature in two isotopic forms, with masses 35 u and 37 u in the ratio of 3:1. Calculate the average atomic mass.
Question 14 :
If atomic number is 16, mass number is 32 and name of atomic species is Sulphur then find number of protons.
Question 15 :
If mass number is 24 and number of protons is 12, then find name of the atomic species.
Question 16 :
If mass number is 24 and number of protons is 12, then find number of neutrons.
Question 17 :
If number of electrons in an atom is 8 and number of protons is also 8, then what is the atomic number of the atom?
Question 18 :
An isotope of iodine is used for making tincture iodine, which is used as a medicine.
Question 20 :
J.J. Thomson proposed that the nucleus of an atom contains only nucleons. TRUE OR FALSE?